Grain-separator sieve.



No. 784,828. PATENTED MAR. 1A, 1905.

E. ARMSTRONG. GRAIN SBPARATOR SIEVE.

APPLICATION FILED FEB. 10, 1902. RENBWED JAN. 20.1905.

UWA jaw/M .L' 'W'Qm/ 8? WAWQM/W UNITED STATES ELIPHALET ARMSTRONG, OF MANSFIELD, OHIO, ASSIGNOR, BY lDIREOT Patented March 14, 1905.

PATENT OFFICE.

AND MESNE ASSIGNMENTS, OF ON F-HALF TO LORENZO D. PAT' EN AND SAMUEL S. BRICKER, OF MANSFIELD, OHIO.

GRAIN-SEPARATOR SIEVEn SPECIFICATION forming part of Letters Patent No. 784,828, dated March 14, 1905.

-- Application iiled February 10, 1902. Renewed January 20, 1905. Serial No. 241,964.

1'() all, who/rt t Wawy concern:

Be it known that I, ELIPHALET ARMSTRONG, a citizen ofthe United States, residing at Mansfield, in the countj7 of Richland and State of Ohio, have invented certain new and useful Improvementsin Grain-Separator Sieves; and I do hereby declarethat the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this specification, and to the characters of reference marked' thereon, in which- Figure l is a perspective view showing the top ofthe device, also showing portions of the concavo-convex pivoted blades broken away. Fig. 2 is a transverse section showing the position of the pivoted concavo-convex blades when the separator-sieve is closed. Fig. 3 is a detached view showing a portion of one of the concavo -convex blades and illustrating its adjusting operating-arm connected thereto. Fig. 4 is a detached viewof one of the adjusting operating-arms. Fig. 5 is a transverse section showing the separator-sieve open.

The present invention has relation to grainseparator sieves; and it consists in the novel construction hereinafter described, and particularly pointed out in the claim.

Similar numerals of reference indicate corresponding parts in all the iigures of the drawings.

In the accompanying drawings, 1 represents the side members, and 2 the end members, of a rectangular frame, which are joined together in any convenient and well-known manner and are formed of lengths to correspond with the size of the grain-separator sieve designed to be constructed. To the end members of the rectangular frame are journaled a series of rods or bars 3, to which rods or bars are securely attached in any convenient and wellknown manner the concavo-convex blades 4. The journaled rods or bars 3 and the concavoconvex blades 4 extend lengthwise of the grain-separator sieve, thereby locating the concavo-convex blades parallel with the airblast, by which arrangement a grain-separator sieve is provided the top or upper face of which is in the same plane throughout its entire length.

For the purpose of providing a means for tuiningtlie concavo-convex blades so as to adjust the space between the fixed edges and the free edges of said blades each of the blades is provided with an adjusting ojicrating-arm 5 and the arms extended downward from the free edges of the concave-convex blades and their bottom or lower ends pivotally connected to the reciprocating rod 6, which reciprocating rod is extended through the side of the shoe 7, as illustrated in Fig. 2, and its outer end provided with an operating' handle or knob 8. The inner end of the reciprocat ing rod 6 is supported and held by means of the bracket 9. The object and purpose of providing the bracket 9 is to cause the reciprocating rod 6 to move in the same plane back and forth throughout its entire length, the outer end of said reciprocating rod being held in true horizontal position by means of the bracket 10, which bracket is securely attached in any convenient and well-known manner to the outside of the machine.

The adjusting operating-arms 5 are attached to the concavo-convex blades 4 at their free edges, and when the blades are brought into position so as to bring the free edges of one of the concavo-convex blades 3 in contact with the l'ixed edges of its adjoining-blade the sieve proper is in closed position and the arms 5 located at an angle to a vertical line. Then it is desired to open the separator, or, in other words, to produce spaces for the different kinds and sizes of grain to be cleaned, the reciprocating rod 6 is moved, by which arrangement the arms 5 are brought into a truc vertical position at the time the blades are lifted at their free edges to the extreme height, it being understood that the different degrees of l adjustment are brought about by different movements of the reciprocating rod 6. After the blades have been adjusted for any particular kind of grain the set-screw 11 is turned downward, so as to clamp the reciprocating rod 6 and prevent any movement thereof.

It will be understood that by providing the concave-convex blades 4 and locating them lengthwise of the separator-sieve the grain will fall between the blades in rows lengthwise or' the sieve and air-blast, thereby allowing the blast to pass through the rows of falling grain and to remove any foreign substance that may pass down with the grain, which arrangement prevents the blast'i'rom banking the grain and passes as unimpeded.

It will be understood that by providing the concave-convex blades 4 as described and locating the convexed faces of said blades upon the upper side oi' the grain-separator sieve proper all grain and seeds will immediately pass between the open spaces of said blades, thereby preventing the grain from Yfollowing 'along the separatorhsieve proper.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, 1sm4 The combination or' a rectangular frame` a series of rods or bars jonrnaled to the frame members and in parallel relation with each other, eoncavo-convexed blades secured to the parallel rods or bars, adjustable' operatingarms attached to the free edges of the concaveconvexed blades and a reciprocating rod, said ELIPHALET ARMSTRONG.

litnesses:

CLAUDE R. YARDLEY, S. S. BRICKER. 

